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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c87914f4322f8000084900b1b4a46e774dd2903f90b130d9b266c1ea42404d5b' 
  AND token = 'ulX2FVf7d3Dzsl4R0MHkjt++UJNLxJMRhgPSe188jCg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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