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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c283fb17c320f0cd2f62928cd4771a729eb8b000dbeb8dd3db61c0dfb02593ca' 
  AND token = 'f9ieOcwUhKSg+kDE2Nat1qR/x+7V64R1qlNIeSD2loE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00102

JSON explain

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