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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '93019a2c7b0e14d4d197773198134cd109e4fb8e29e7b869d642e64f7577be8f' 
  AND token = 'wyFY/CyCHcbObNhBFR1w23r6II7OHCUgtfFkrZmDRuw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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