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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '764d5a0e6896959be9a9f2c8054ced862bbbeb84ebd4ed3facb17fd907ef8326' 
  AND token = 'C5gcfh+PAkp1sPmEVVOI5yVZLCSeRAlWC2S7+4ia8M0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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