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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e5430bc3c931c8a9fc20230324a24c7b812a2be31b410444f66bf288cf351e76' 
  AND token = 'Kwg7M+GhecWWbvHX1rcYXmGl7Qv3doIfl4AFirOwZrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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