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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '596a32616b8fe0e8023cf62563db0012eebd8525b5680467088d8c85dacede8a' 
  AND token = 'DmdamwChnkNb0UekvPX2ISa6B6X0UN5UiOFzx3KxpoY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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