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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5af8e5c4fe99fc28e4a2c79e0ca41d366ef0fabf492f4fa186709ed3247ac0e3' 
  AND token = 'OnyFFen7oCRb9k1vJ03pRTkfgmrJGzEZBD1fNuIR1qY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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