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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '393cb91491d2d1b0072de9607e099ba929103349ec846341c0f415fa1a99bc1f' 
  AND token = '7n1x25O7biT5hP2b4AFiWvJW3LxwPJyWNbukH/40ats=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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