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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'abda185363d22753313556f3f9f1b2f5473b97ea1c3dc45d60f1ae6cdb24f5de' 
  AND token = '4AeVB4uT0YLSVsxGMuBrAH2eNGmxUnQyfCFc2G2sji0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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