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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e03df7337d40896e2eb91c63b6aebd52a86d310a52105c2cc1b8642eb6b9ae7' 
  AND token = 'R1Vq66BHLDwUt14nk1jpf7I6PO3TESRwah5hVFR0FQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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