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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3003b3b74b6df2ac30e1ef55d53005b4306c6cb1030455aef60565ac14c2de3e' 
  AND token = 'zmNYXIaOc0pvdrLE6fikK/VgjZI6ZKR386hfJ65Q46g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

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