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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22b9d7ab4d762c6a8446541ec59494ef5a2dd26c0f6d2000cc5c3a727f20fa75' 
  AND token = 'UyqS5fQpc138EyDRH3LCSRaD/uhgqEQsmB+MYrXDn30=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}