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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ecf77e8f2db51d8c57166ccbcf403d4b4c55c36161cbe3eaaacf76edb2f88001' 
  AND token = 'O0DRIHuwirWwowAD8gNwItHSpGdyZUCoYeyqU3BITJk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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