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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7177235deba41912cde6cefe33fe41c38da9c6b543aee9b0dddc5847118f6f87' 
  AND token = 'S0n71Ww1/wbPjUVRiDXWEUl2t6tdIo1QewJekp0G4sw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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